American developers designed an app that uses information from spotters in the field in Syria and other data to send out warnings about incoming airstrikes to civilians on the ground. CNN’s Arwa Damon reports.

Rare images from inside Yemen’s city of Taiz show the devastation wrought by months of fighting between Houthi force, backed by Iran and Yemeni government forces bolstered by Saudi Arabia and its US-equipped air power. CNN’s Nick Paton Walsh reports.